benchmark: rename count to n

It's a common approach to use n as number of iterations over the
benchmark. Changing it from count to n will also make
./node benchmark/run.js --set n=X more meaningful among other
benchmarks

PR-URL: #54271
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

benchmark/misc/startup-cli-version.js

@@ -18,12 +18,12 @@ const availableCli = [
 ].filter((cli) => existsSync(path.resolve(__dirname, '../../', cli)));
 const bench = common.createBenchmark(main, {
   cli: availableCli,
-  count: [30],
+  n: [30],
 });
 
 function spawnProcess(cli, bench, state) {
   const cmd = process.execPath || process.argv[0];
-  while (state.finished < state.count) {
+  while (state.finished < state.n) {
     const child = spawnSync(cmd, [cli, '--version'], {
       env: { npm_config_loglevel: 'silent', ...process.env },
     });
@@ -41,15 +41,15 @@ function spawnProcess(cli, bench, state) {
       bench.start();
     }
 
-    if (state.finished === state.count) {
-      bench.end(state.count);
+    if (state.finished === state.n) {
+      bench.end(state.n);
     }
   }
 }
 
-function main({ count, cli }) {
+function main({ n, cli }) {
   cli = path.resolve(__dirname, '../../', cli);
   const warmup = 3;
-  const state = { count, finished: -warmup };
+  const state = { n, finished: -warmup };
   spawnProcess(cli, bench, state);
 }

benchmark/misc/startup-core.js

@@ -12,12 +12,12 @@ const bench = common.createBenchmark(main, {
     'test/fixtures/snapshot/typescript',
   ],
   mode: ['process', 'worker'],
-  count: [30],
+  n: [30],
 });
 
 function spawnProcess(script, bench, state) {
   const cmd = process.execPath || process.argv[0];
-  while (state.finished < state.count) {
+  while (state.finished < state.n) {
     const child = spawnSync(cmd, [script]);
     if (child.status !== 0) {
       console.log('---- STDOUT ----');
@@ -32,8 +32,8 @@ function spawnProcess(script, bench, state) {
       bench.start();
     }
 
-    if (state.finished === state.count) {
-      bench.end(state.count);
+    if (state.finished === state.n) {
+      bench.end(state.n);
     }
   }
 }
@@ -49,18 +49,18 @@ function spawnWorker(script, bench, state) {
       // Finished warmup.
       bench.start();
     }
-    if (state.finished < state.count) {
+    if (state.finished < state.n) {
       spawnWorker(script, bench, state);
     } else {
-      bench.end(state.count);
+      bench.end(state.n);
     }
   });
 }
 
-function main({ count, script, mode }) {
+function main({ n, script, mode }) {
   script = path.resolve(__dirname, '../../', `${script}.js`);
   const warmup = 3;
-  const state = { count, finished: -warmup };
+  const state = { n, finished: -warmup };
   if (mode === 'worker') {
     Worker = require('worker_threads').Worker;
     spawnWorker(script, bench, state);